Geoffrey S.D. Beach

  • Professor of Materials Science and Engineering
  • Co-director, Materials Research Laboratory (MRL) at MIT
  • BS Physics, California Institute of Technology, 1997
  • PhD Physics, University of California, San Diego, 2003

Ceramics; Condensed Matter Physics; Electrochemistry; Electronic Materials; Magnetic Materials; Nanotechnology; Surfaces, Interfaces, and Thin Films; Transport Phenomena

Geoffrey S.D. Beach

Research

Professor Geoffrey Beach worked in UCSD's Center for Magnetic Recording Research to develop novel magnetic thin-film nanocomposites for ultrafast data storage applications. He later went on to the University of Texas at Austin as a Postdoctoral Fellow in the Department of Physics and the Texas Materials Institute where he made important discoveries in magnetization dynamics and spin-transfer torque in nanoscale magnetic structures. His current research interests focus on spin dynamics and “spin-electronics” in nanoscale magnetic materials and devices. Developing ways to store information more densely and to access it more quickly requires understanding the magnetization configurations in nanoscale structures and how they evolve in time. His work aims in part to understand and control spin excitations in magnetic materials whose dimensions approach fundamental magnetic length scales. One of the most exciting prospects in magnetism today is the possibility of electrical control of the magnetic state of a device, taking advantage of the coupling between spin and charge in a conducting ferromagnetic material. A major thrust of his research aims to harness the spin of the electron in magnetic materials to realize new approaches to spin-based storage and computation. Studying these processes requires the development of advanced instrumentation capable of probing magnetization dynamics at the shortest timescales and the smallest length scales. His group will work to develop new optical and electrical approaches to push the detection limits in order to enable development of new materials and structures to meet the information storage and processing demands of the future.

Recent News

A new way to control magnets

September 24, 2021

Reversible system can flip the magnetic orientation of particles with a small voltage; could lead to faster data storage and smaller sensors.  

Controllable Spintronics

October 16, 2018

A new approach to controlling magnetism in a microchip could open the doors to memory, computing, and sensing devices that consume drastically less power than existing versions. The approach could also overcome some of the inherent physical limitations that have been slowing progress in this…  

Ferrimagnets speed up racetrack memories

September 24, 2018

Spintronics devices, which exploit the spin of an electron as well as its charge, could be ideal for use in high-density data storage devices and for next generation information processing. One promising technology involves using magnetic solitons, such as nanoscale domain walls and magnetic…  

Deshpande Center and J-WAFS announce fall 2017 research grants

October 17, 2017

The MIT Deshpande Center for Technological Innovation announced today the award of $768,000 in grants to 17 MIT research teams currently working on early-stage technologies. DMSE-related projects include: "Structured Nucleic Acid Nanoparticle Therapeutic Delivery Platform" — Mark Bathe,…  

More news about Geoffrey S.D. Beach >>

Publications

2021

M. Huang et al., “Voltage control of ferrimagnetic order and voltage-assisted writing of ferrimagnetic spin textures”, Nature Nanotechnology. 2021.
D. M. J. van Elst et al., “Accurate extraction of anisotropic spin–orbit torques from harmonic measurements”, Applied Physics Letters, vol. 118, no. 17. AIP Publishing, p. 172403, 2021.
E. R. Rosenberg et al., “Magnetic Properties and Growth‐Induced Anisotropy in Yttrium Thulium Iron Garnet Thin Films”, Advanced Electronic Materials. Wiley, p. 2100452, 2021.
H. Vakili et al., “Skyrmionics—Computing and memory technologies based on topological excitations in magnets”, Journal of Applied Physics, vol. 130, no. 7. AIP Publishing, p. 070908, 2021.
S. K. Kim, Beach, G. S. D., Lee, K. -J., Ono, T., Rasing, T., and Yang, H., “Ferrimagnetic spintronics”, Nature Materials, vol. 21, no. 1. Springer Science and Business Media LLC, pp. 24-34, 2021.

2020

K. Litzius et al., “The role of temperature and drive current in skyrmion dynamics”, Nature Electronics, vol. 3, no. 1. Springer Science and Business Media LLC, pp. 30-36, 2020.
L. Caretta et al., “Interfacial Dzyaloshinskii-Moriya interaction arising from rare-earth orbital magnetism in insulating magnetic oxides”, Nature Communications, vol. 11, no. 1. Springer Science and Business Media LLC, 2020.
F. Büttner et al., “Observation of fluctuation-mediated picosecond nucleation of a topological phase”, Nature Materials. Springer Science and Business Media LLC, 2020.

2019

M. Huang et al., “Voltage-gated optics and plasmonics enabled by solid-state proton pumping”, Nature Communications, vol. 10, no. 1. Springer Science and Business Media LLC, 2019.

2018

E. R. Rosenberg et al., “Magnetism and spin transport in rare-earth-rich epitaxial terbium and europium iron garnet films”, Physical Review Materials, vol. 2. 2018.
I. Lemesh and Beach, G. S. D., “Twisted domain walls and skyrmions in perpendicularly magnetized multilayers”, Physical Review B, vol. 98. 2018.
Y. Dovzhenko et al., “Magnetostatic twists in room-temperature skyrmions explored by nitrogen-vacancy center spin texture reconstruction”, Nature Communications, vol. 9. 2018.
F. Büttner, Lemesh, I., and Beach, G. S. D., “Theory of isolated magnetic skyrmions: From fundamentals to room temperature applications”, Scientific Reports, vol. 8. 2018.
I. Lemesh et al., “Current-Induced Skyrmion Generation through Morphological Thermal Transitions in Chiral Ferromagnetic Heterostructures”, Advanced Materials, vol. 30. p. 1805461, 2018.
K. Ueda, Tan, A. J., and Beach, G. S. D., “Effect of annealing on magnetic properties in ferrimagnetic GdCo alloy films with bulk perpendicular magnetic anisotropy”, AIP Advances, vol. 8. p. 125204, 2018.
L. Caretta et al., “Fast current-driven domain walls and small skyrmions in a compensated ferrimagnet”, Nature Nanotechnology, vol. 13. pp. 1154-1160, 2018.
C. O. Avci, Mendil, J., Beach, G. S. D., and Gambardella, P., “Origins of the Unidirectional Spin Hall Magnetoresistance in Metallic Bilayers”, Physical Review Letters, vol. 121. 2018.
S. Schlotter, Agrawal, P., and Beach, G. S. D., “Temperature dependence of the Dzyaloshinskii-Moriya interaction in Pt/Co/Cu thin film heterostructures”, Applied Physics Letters, vol. 113. p. 092402, 2018.

2017

S. Woo and Beach, G. S. D., “Control of propagating spin-wave attenuation by the spin-Hall effect”, Journal of Applied Physics, vol. 122. p. 093901, 2017.
F. Büttner et al., “Field-free deterministic ultrafast creation of magnetic skyrmions by spin–orbit torques”, Nature Nanotechnology, vol. 12. pp. 1040-1044, 2017.
M. Mann and Beach, G. S. D., “Reduction of in-plane field required for spin-orbit torque magnetization reversal by insertion of Au spacer in Pt/Au/Co/Ni/Co/Ta”, APL Materials, vol. 5. p. 106104, 2017.
I. Lemesh, Büttner, F., and Beach, G. S. D., “Accurate model of the stripe domain phase of perpendicularly magnetized multilayers”, Physical Review B, vol. 95. 2017.
C. O. Avci, Quindeau, A., Mann, M., Pai, C. -F., Ross, C. A., and Beach, G. S. D., “Spin transport in as-grown and annealed thulium iron garnet/platinum bilayers with perpendicular magnetic anisotropy”, Physical Review B, vol. 95. 2017.
S. Jaiswal et al., “Investigation of the Dzyaloshinskii-Moriya interaction and room temperature skyrmions in W/CoFeB/MgO thin films and microwires”, Applied Physics Letters, vol. 111. p. 022409, 2017.
M. Huang, Tan, A. J., Mann, M., Bauer, U., Ouedraogo, R., and Beach, G. S. D., “Three-terminal resistive switch based on metal/metal oxide redox reactions”, Scientific Reports, vol. 7. 2017.
E. Rapoport and Beach, G. S. D., “Architecture for Directed Transport of Superparamagnetic Microbeads in a Magnetic Domain Wall Routing Network”, Scientific Reports, vol. 7. 2017.
M. Ouk and Beach, G. S. D., “Superparamagnetic microbead transport induced by a magnetic field on large-area magnetic antidot arrays”, Journal of Magnetism and Magnetic Materials, vol. 444. pp. 218-226, 2017.
K. Ueda, Mann, M., de Brouwer, P. W. P., Bono, D. C., and Beach, G. S. D., “Temperature dependence of spin-orbit torques across the magnetic compensation point in a ferrimagnetic TbCo alloy film”, Physical Review B, vol. 96. 2017.
C. O. Avci et al., “Fast switching and signature of efficient domain wall motion driven by spin-orbit torques in a perpendicular anisotropy magnetic insulator/Pt bilayer”, Applied Physics Letters, vol. 111. p. 072406, 2017.
S. Jaiswal et al., “Investigation of the Dzyaloshinskii-Moriya interaction and room temperature skyrmions in W/CoFeB/MgO thin films and microwires”, Applied Physics Letters, vol. 111. p. 022409, 2017.
F. Hellman et al., “Interface-induced phenomena in magnetism”, Reviews of Modern Physics, vol. 89. p. UNSP - 025006, 2017.
C. O. Avci, Mann, M., Tan, A. J., Gambardella, P., and Beach, G. S. D., “A multi-state memory device based on the unidirectional spin Hall magnetoresistance”, Applied Physics Letters, vol. 110. p. 203506, 2017.
S. Woo, Delaney, T., and Beach, G. S. D., “Magnetic domain wall depinning assisted by spin wave bursts”, Nature Physics, vol. 13. pp. 448-454, 2017.
C. O. Avci, Quindeau, A., Mann, M., Pai, C. -F., Ross, C. A., and Beach, G. S. D., “Spin transport in as-grown and annealed thulium iron garnet/platinum bilayers with perpendicular magnetic anisotropy”, Physical Review B, vol. 95. p. 115428, 2017.
C. O. Avci et al., “Current-induced switching in a magnetic insulator”, Nature Materials, vol. 16. p. 309 - +, 2017.
K. Litzius et al., “Skyrmion Hall effect revealed by direct time-resolved X-ray microscopy”, Nature Physics, vol. 13. pp. 170-175, 2017.
L. Baldrati, Tan, A. J., Mann, M., Bertacco, R., and Beach, G. S. D., “Magneto-ionic effect in CoFeB thin films with in-plane and perpendicular-to-plane magnetic anisotropy”, Applied Physics Letters, vol. 110. p. 012404, 2017.
A. Quindeau et al., “Tm3Fe5O12/Pt Heterostructures with Perpendicular Magnetic Anisotropy for Spintronic Applications”, Advanced Electronic Materials, vol. 3. p. 1600376, 2017.

2016

K. Ueda, Mann, M., Pai, C. -F., Tan, A. -J., and Beach, G. S. D., “Spin-orbit torques in Ta/TbxCo100-x ferrimagnetic alloy films with bulk perpendicular magnetic anisotropy”, Applied Physics Letters, vol. 109. p. 232403, 2016.
K. Ueda, Pai, C. -F., Tan, A. J., Mann, M., and Beach, G. S. D., “Effect of rare earth metal on the spin-orbit torque in magnetic heterostructures”, Applied Physics Letters, vol. 108. p. 232405, 2016.
C. -F. Pai, Mann, M., Tan, A. J., and Beach, G. S. D., “Determination of spin torque efficiencies in heterostructures with perpendicular magnetic anisotropy”, Physical Review B, vol. 93. p. 144409, 2016.
J. Yang, Beach, G. S. D., Knutson, C., and Erskine, J. L., “Magnetic domain-wall velocity enhancement induced by a transverse magnetic field”, Journal of Magnetism and Magnetic Materials, vol. 397. pp. 325-332, 2016.

2015

P. Agrawal, Bauer, U., and Beach, G. S. D., “Spontaneous domain nucleation under in-plane fields in ultrathin films with Dzyaloshinskii-Moriya interaction”, Journal of Applied Physics, vol. 117. p. 17C744, 2015.
S. Emori, Umachi, C. K., Bono, D. C., and Beach, G. S. D., “Generalized analysis of thermally activated domain-wall motion in Co/Pt multilayers”, Journal of Magnetism and Magnetic Materials, vol. 378. pp. 98-106, 2015.
U. Bauer et al., “Magneto-ionic control of interfacial magnetism”, Nature Materials, vol. 14. pp. 174-181, 2015.

2014

S. Emori, Bauer, U., Woo, S., and Beach, G. S. D., “Large voltage-induced modification of spin-orbit torques in Pt/Co/GdOx”, Applied Physics Letters, vol. 105. p. 222401, 2014.
S. Emori et al., “Spin Hall torque magnetometry of Dzyaloshinskii domain walls”, Physical Review B, vol. 90. p. 184427, 2014.
S. Woo, Mann, M., Tan, A. J., Caretta, L., and Beach, G. S. D., “Enhanced spin-orbit torques in Pt/Co/Ta heterostructures”, Applied Physics Letters, vol. 105. p. 212404, 2014.
E. Martinez, Emori, S., Perez, N., Torres, L., and Beach, G. S. D., “Current-driven dynamics of Dzyaloshinskii domain walls in the presence of in-plane fields: Full micromagnetic and one-dimensional analysis”, Journal of Applied Physics, vol. 115. p. 213909, 2014.
U. Bauer, Przybylski, M., and Beach, G. S. D., “Voltage control of magnetic anisotropy in Fe films with quantum well states”, Physical Review B, vol. 89. 2014.
U. Bauer, Przybylski, M., and Beach, G. S. D., “Voltage control of magnetic anisotropy in Fe films with quantum well states”, Physical Review B, vol. 89. p. 174402, 2014.
N. Perez, Martinez, E., Torres, L., Woo, S. -H., Emori, S., and Beach, G. S. D., “Chiral magnetization textures stabilized by the Dzyaloshinskii-Moriya interaction during spin-orbit torque switching”, Applied Physics Letters, vol. 104. 2014.
J. A. Currivan et al., “Polymethyl methacrylate/hydrogen silsesquioxane bilayer resist electron beam lithography process for etching 25nm wide magnetic wires”, Journal of Vacuum Science & Technology B, vol. 32. 2014.
J. A. Currivan et al., “Polymethyl methacrylate/hydrogen silsesquioxane bilayer resist electron beam lithography process for etching 25nm wide magnetic wires”, Journal of Vacuum Science & Technology B, vol. 32. p. 021601, 2014.

2013

E. Martinez, Emori, S., and Beach, G. S. D., “Current-driven domain wall motion along high perpendicular anisotropy multilayers: The role of the Rashba field, the spin Hall effect, and the Dzyaloshinskii-Moriya interaction”, Applied Physics Letters, vol. 103. p. 072406, 2013.
Q. Wang et al., “Design of nanostrip magnonic crystal waveguides with a single magnonic band gap”, Journal of Magnetism and Magnetic Materials, vol. 340. pp. 23-26, 2013.
Q. Wang et al., “Design of nanostrip magnonic crystal waveguides with a single magnonic band gap”, Journal of Magnetism and Magnetic Materials, vol. 340. pp. 23-26, 2013.
S. Emori and Beach, G. S. D., “Assessment of Rashba Field Effects in Ultrathin Pt/Co/GdOx Submicrometer Strips”, Ieee Transactions on Magnetics, vol. 49. pp. 3113-3116, 2013.
S. Emori, Bauer, U., Ahn, S. -M., Martinez, E., and Beach, G. S. D., “Current-driven dynamics of chiral ferromagnetic domain walls”, Nature Materials, vol. 12. pp. 611-616, 2013.
U. Bauer, Emori, S., and Beach, G. S. D., “Voltage-controlled domain wall traps in ferromagnetic nanowires”, Nature Nanotechnology, vol. 8. pp. 411-416, 2013.
U. Bauer, Emori, S., and Beach, G. S. D., “Voltage-controlled domain wall traps in ferromagnetic nanowires”, Nature Nanotechnology, vol. 8. pp. 411-416, 2013.
E. Rapoport and Beach, G. S. D., “Transport dynamics of superparamagnetic microbeads trapped by mobile magnetic domain walls”, Physical Review B, vol. 87. 2013.
S. -M. Ahn and Beach, G. S. D., “Crossover between in-plane and perpendicular anisotropy in Ta/CoxFe100-x/MgO films as a function of Co composition”, Journal of Applied Physics, vol. 113. 2013.

2012

Y. Wang et al., “Fabrication, structure and magnetic properties of CoPt3, CoPt and Co3Pt nanoparticles”, Journal of Physics D-Applied Physics, vol. 45. p. 485001, 2012.
U. Bauer, Emori, S., and Beach, G. S. D., “Voltage-gated modulation of domain wall creep dynamics in an ultrathin metallic ferromagnet”, Applied Physics Letters, vol. 101. 2012.
U. Bauer, Emori, S., and Beach, G. S. D., “Voltage-gated modulation of domain wall creep dynamics in an ultrathin metallic ferromagnet”, Applied Physics Letters, vol. 101. p. 172403, 2012.
S. Emori, Bono, D. C., and Beach, G. S. D., “Interfacial current-induced torques in Pt/Co/GdOx”, Applied Physics Letters, vol. 101. p. 042405, 2012.
U. Bauer, Emori, S., and Beach, G. S. D., “Electric field control of domain wall propagation in Pt/Co/GdOx films”, Applied Physics Letters, vol. 100. p. 192408, 2012.
E. Rapoport and Beach, G. S. D., “Magneto-mechanical resonance of a single superparamagnetic microbead trapped by a magnetic domain wall”, Journal of Applied Physics, vol. 111. p. 07B310, 2012.
S. Emori, Bono, D. C., and Beach, G. S. D., “Time-resolved measurements of field-driven domain wall motion in a submicron strip with perpendicular magnetic anisotropy”, Journal of Applied Physics, vol. 111. p. 07D304, 2012.
Y. Jang, Mascaro, M. D., Beach, G. S. D., and Ross, C. A., “Current-driven domain wall motion in heterostructured ferromagnetic nanowires”, Applied Physics Letters, vol. 100. 2012.
Y. J. Zhang et al., “Perpendicular exchange bias of [Pt/Co](n)/CoO multilayer on ordered nanosphere arrays”, Journal of Applied Physics, vol. 111. p. 053925, 2012.
Y. J. Zhang et al., “Perpendicular exchange bias of [Pt/Co](n)/CoO multilayer on ordered nanosphere arrays”, Journal of Applied Physics, vol. 111. 2012.
U. Bauer, Przybylski, M., Kirschner, J., and Beach, G. S. D., “Magnetoelectric Charge Trap Memory”, Nano Letters, vol. 12. pp. 1437-1442, 2012.
E. Rapoport and Beach, G. S. D., “Dynamics of superparamagnetic microbead transport along magnetic nanotracks by magnetic domain walls”, Applied Physics Letters, vol. 100. p. 082401, 2012.
S. Emori and Beach, G. S. D., “Roles of the magnetic field and electric current in thermally activated domain wall motion in a submicrometer magnetic strip with perpendicular magnetic anisotropy”, Journal of Physics-Condensed Matter, vol. 24. p. 024214, 2012.
S. Emori and Beach, G. S. D., “Roles of the magnetic field and electric current in thermally activated domain wall motion in a submicrometer magnetic strip with perpendicular magnetic anisotropy”, Journal of Physics-Condensed Matter, vol. 24. 2012.
E. Rapoport, Montana, D., and Beach, G. S. D., “Integrated capture, transport, and magneto-mechanical resonant sensing of superparamagnetic microbeads using magnetic domain walls”, Lab on a Chip, vol. 12. pp. 4433-4440, 2012.

2011

S. Emori and Beach, G. S. D., “Optimization of out-of-plane magnetized Co/Pt multilayers with resistive buffer layers”, Journal of Applied Physics, vol. 110. p. 033919, 2011.
S. Emori and Beach, G. S. D., “Optimization of out-of-plane magnetized Co/Pt multilayers with resistive buffer layers”, Journal of Applied Physics, vol. 110. 2011.
S. Emori and Beach, G. S. D., “Enhanced current-induced domain wall motion by tuning perpendicular magnetic anisotropy”, Applied Physics Letters, vol. 98. p. 132508, 2011.
S. Emori and Beach, G. S. D., “Enhanced current-induced domain wall motion by tuning perpendicular magnetic anisotropy”, Applied Physics Letters, vol. 98. 2011.

2010

G. S. D. Beach, “SPINTRONICS Beyond the speed limit”, Nature Materials, vol. 9. pp. 959-960, 2010.
G. S. D. Beach, “SPINTRONICS Beyond the speed limit”, Nature Materials, vol. 9. pp. 959-960, 2010.
S. A. Yang et al., “Topological electromotive force from domain-wall dynamics in a ferromagnet”, Physical Review B, vol. 82. p. 054410, 2010.
S. A. Yang et al., “Topological electromotive force from domain-wall dynamics in a ferromagnet”, Physical Review B, vol. 82. 2010.

2009

S. A. Yang et al., “Universal Electromotive Force Induced by Domain Wall Motion”, Physical Review Letters, vol. 102. p. 067201, 2009.
S. A. Yang et al., “Universal Electromotive Force Induced by Domain Wall Motion”, Physical Review Letters, vol. 102. 2009.

2008

G. S. D. Beach, Tsoi, M., and Erskine, J. L., “Current-induced domain wall motion”, Journal of Magnetism and Magnetic Materials, vol. 320. pp. 1272-1281, 2008.
J. Yang, Nistor, C., Beach, G. S. D., and Erskine, J. L., “Magnetic domain-wall velocity oscillations in permalloy nanowires”, Physical Review B, vol. 77. 2008.

2007

G. S. D. Beach, Knutson, C., Tsoi, M., and Erskine, J. L., “Field- and current-driven domain wall dynamics: An experimental picture”, Journal of Magnetism and Magnetic Materials, vol. 310. pp. 2038-2040, 2007.

2006

S. Yang, Beach, G. S. D., and Erskine, J. L., “Negative Barkhausen jumps in permalloy thin-film microstructures”, Journal of Applied Physics, vol. 100. 2006.
C. Nistor, Beach, G. S. D., and Erskine, J. L., “Versatile magneto-optic Kerr effect polarimeter for studies of domain-wall dynamics in magnetic nanostructures”, Review of Scientific Instruments, vol. 77. 2006.
C. Nistor, Beach, G. S. D., and Erskine, J. L., “Versatile magneto-optic Kerr effect polarimeter for studies of domain-wall dynamics in magnetic nanostructures”, Review of Scientific Instruments, vol. 77. p. 103901, 2006.
G. S. D. Beach, Knutson, C., Nistor, C., Tsoi, M., and Erskine, J. L., “Nonlinear domain-wall velocity enhancement by spin-polarized electric current”, Physical Review Letters, vol. 97. 2006.

2005

G. S. D. Beach, Nistor, C., Knutson, C., Tsoi, M., and Erskine, J. L., “Dynamics of field-driven domain-wall propagation in ferromagnetic nanowires”, Nature Materials, vol. 4. pp. 741-744, 2005.
G. S. D. Beach and Berkowitz, A. E., “Co-Fe metal/native-oxide multilayers: A new direction in soft magnetic thin film design II. Microscopic characteristics and interactions”, Ieee Transactions on Magnetics, vol. 41. pp. 2053-2063, 2005.
G. S. D. Beach and Berkowitz, A. E., “Co-Fe metal/native-oxide multilayers: A new direction in soft magnetic thin film design I. Quasi-static properties and dynamic response”, Ieee Transactions on Magnetics, vol. 41. pp. 2043-2052, 2005.
G. S. D. Beach, Smith, D. J., Parker, F. T., and Berkowitz, A. E., High-resistivity soft magnetic thin films using CoxFe100-x metalinative oxide multilayers (Invited). 2005.

2003

G. S. D. Beach, Parker, F. T., Smith, D. J., Crozier, P. A., and Berkowitz, A. E., “New magnetic order in buried native iron oxide layers”, Physical Review Letters, vol. 91. 2003.
G. S. D. Beach, Silva, T. J., Parker, F. T., and Berkowitz, A. E., “High-frequency characteristics of metal/native-oxide multilayers”, Ieee Transactions on Magnetics, vol. 39. pp. 2669-2671, 2003.

2002

G. S. D. Beach, Berkowitz, A. E., Harris, V. G., Parker, F. T., Ramadurai, B., and Smith, D. J., “Properties of the native oxide in metal/native oxide multilayers (invited)”, Journal of Applied Physics, vol. 91. pp. 7526-7528, 2002.

2001

G. S. D. Beach, Berkowitz, A. E., Parker, F. T., and Smith, D. J., “Magnetically soft, high-moment, high-resistivity thin films using discontinuous metal/native oxide multilayers”, Applied Physics Letters, vol. 79. pp. 224-226, 2001.

1998

A. V. Samoilov, Beach, G. S. D., Fu, C. C., Yeh, N. C., and Vasquez, R. P., “Giant spontaneous Hall effect and magnetoresistance in La1-xCaxCoO3(0.1 <= x <= 0.5)”, Journal of Applied Physics, vol. 83. pp. 6998-7000, 1998.
A. V. Samoilov, Beach, G. S. D., Fu, C. C., Yeh, N. C., and Vasquez, R. P., “Magnetic percolation and giant spontaneous Hall effect in La1-xCaxCoO3 (0.2 <= x <= 0.5)”, Physical Review B, vol. 57. pp. 14032-14035, 1998.

1997

N. C. Yeh, Vasquez, R. P., Beam, D. A., Fu, C. C., Huynh, J., and Beach, G. S. D., “Effects of lattice distortion and Jahn-Teller coupling on the magnetoresistance of La0.7Ca0.3MnO3 and La0.5Ca0.5CoO3 epitaxial films”, Journal of Physics-Condensed Matter, vol. 9. pp. 3713-3721, 1997.
N. C. Yeh et al., “Effects of lattice distortion on the physical properties and surface morphology of magnetoresistive perovskite epitaxial films”, Journal of Applied Physics, vol. 81. pp. 5499-5501, 1997.
N. C. Yeh et al., “Effects of lattice distortion, polaron conduction and double-exchange interaction on the physical properties of magnetoresistive manganites and cobaltites”, in Epitaxial Oxide Thin Films Iii, vol. 474, 1997, pp. 145-156.